Moved CEnableForDockWidgetInfoArea to ns BlackGui, was in BlackGui::Components for some reason

Discovered during T536

src/blackgui/enablefordockwidgetinfoarea.cpp

@@ -0,0 +1,100 @@
+/* Copyright (C) 2013
+ * swift project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#include "blackgui/enablefordockwidgetinfoarea.h"
+#include "blackgui/dockwidgetinfoarea.h"
+#include "blackgui/enableforframelesswindow.h"
+#include "blackgui/guiutility.h"
+#include "blackgui/infoarea.h"
+
+#include <QDockWidget>
+#include <QMetaObject>
+#include <QObject>
+#include <QtGlobal>
+#include <QTimer>
+#include <QPointer>
+
+using namespace BlackMisc::Aviation;
+using namespace BlackGui;
+
+namespace BlackGui
+{
+    CEnableForDockWidgetInfoArea::CEnableForDockWidgetInfoArea(CDockWidgetInfoArea *parentInfoArea)
+    {
+        // it the parent is already an info area at this time, we keep it
+        // otherwise we expect the info area to set it later
+        m_parentDockableInfoArea = parentInfoArea;
+    }
+
+    bool CEnableForDockWidgetInfoArea::setParentDockWidgetInfoArea(CDockWidgetInfoArea *parentDockableWidget)
+    {
+        // sanity check
+        if (m_parentDockableInfoArea)
+        {
+            // we already have a value
+            // changes should not happen
+            Q_ASSERT_X(m_parentDockableInfoArea == parentDockableWidget, Q_FUNC_INFO, "Reassigned parent dock widget area");
+            return m_parentDockableInfoArea == parentDockableWidget;
+        }
+
+        m_parentDockableInfoArea = parentDockableWidget;
+        QMetaObject::Connection con = QDockWidget::connect(parentDockableWidget, &QDockWidget::destroyed, [this]
+        {
+            // break dependency to dockable widget
+            m_parentDockableInfoArea = nullptr;
+        });
+        Q_ASSERT_X(con, Q_FUNC_INFO, "Connection failed");
+        m_connections.append(con);
+        return true;
+    }
+
+    CInfoArea *CEnableForDockWidgetInfoArea::getParentInfoArea() const
+    {
+        Q_ASSERT(m_parentDockableInfoArea);
+        if (!m_parentDockableInfoArea) return nullptr;
+        return m_parentDockableInfoArea->getParentInfoArea();
+    }
+
+    bool CEnableForDockWidgetInfoArea::isParentDockWidgetFloating() const
+    {
+        Q_ASSERT(m_parentDockableInfoArea);
+        if (!m_parentDockableInfoArea) { return false; }
+        return m_parentDockableInfoArea->isFloating();
+    }
+
+    bool CEnableForDockWidgetInfoArea::isVisibleWidget() const
+    {
+        if (!m_parentDockableInfoArea) { return false; } // can happen function is used while dock widget not yet fully initialized
+        return m_parentDockableInfoArea->isVisibleWidget();
+    }
+
+    CEnableForFramelessWindow *CEnableForDockWidgetInfoArea::mainApplicationWindow() const
+    {
+        CEnableForFramelessWindow *mw = CGuiUtility::mainFramelessEnabledWindow();
+        return mw;
+    }
+
+    QWidget *CEnableForDockWidgetInfoArea::mainApplicationWindowWidget() const
+    {
+        CEnableForFramelessWindow *mw = this->mainApplicationWindow();
+        return mw ? mw->getWidget() : nullptr;
+    }
+
+    void CEnableForDockWidgetInfoArea::displayMyself()
+    {
+        // if we are already visible, we are done
+        if (this->isVisibleWidget()) { return; }
+
+        // select myself
+        if (this->getParentInfoArea())
+        {
+            this->getParentInfoArea()->selectArea(this->getDockWidgetInfoArea());
+        }
+    }
+} // namespace